Not to worry, "Daily Show" fans: It looks like the show will be in good hands this summer with substitute host John Oliver.

On Monday night, Oliver began a three-month stint hosting the show while Jon Stewart takes his first extended hiatus from the show. The John Oliver era started off with a bang, as he was on point in ripping the National Security Agency's extensive surveillance operations.

Oliver said that the NSA is surveilling "vastly more information than even George Orwell wet the bed over," reassuring his viewers that NSA surveillance only affects people who "make calls or use the Internet."

"The Amish must feel really f—ing smug right now," Oliver quipped.

Oliver criticized the process by which the NSA obtains a warrant for surveillance and how the FISA court determines — with "51 percent" probability — that the target is not an American citizen, likening it to flipping a coin.